Use of alkane sulphonic acid for rust removal
AssigneeArkema France
InventorsJean-Alex Laffitte, Bernard Monguillon
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Abstract
The present invention relates to the use of at least one alkane sulphonic acid, with formula R—SO3H, where R represents a saturated, linear or branched hydrocarbon chain, comprising 1 to 4 atoms of carbon for removing rust from all types of surface, in particular from metal surfaces, specifically iron, steel and others. The invention also relates to a method for cleaning rust from all types of surfaces using at least one alkane sulphonic acid.
Claims18
A method of removing rust from a surface, which comprising
- contacting the rust with a composition consisting essentially of at least one alkanesulfonic acid of formula R—SO3H, wherein R represents a saturated and linear or branched hydrocarbon chain comprising from 1 to 4 carbon atoms, and
- optionally contacting the rust with one or more additives selected from the group consisting of:
- hydrotropic agents, solubilizing agents, gelling agents, solvents, biocides, disinfectants, rheological agents, texturizing agents, thickening agents, organic acids, inorganic acids, flame retardants, preservatives, anionic surfactants, cationic surfactants, nonionic surfactants, amphoteric surfactants, emulsifiers, detergents, soaps, foaming agents, anti-foaming agents, antifreezes, colorants, fragrances, and odorous agents, and
- optionally followed by one or more stages of rinsing and/or drying.
A method of removing rust from a surface, which comprises contacting the rust with a composition that consists essentially of an amount of at least one alkanesulfonic acid of formula R—SO3H, wherein R represents a saturated and linear or branched hydrocarbon chain comprising from 1 to 4 carbon atoms.
Dependencies are inferred from the claim text.